Grooving and seaming machine



(No Model.)

P. BIRCH.

GROOVING AND SEAMING MACHINE. No. 340,413 Patented Apr. 20-, 1886.

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enoovme AND SEAMING MACHENE.

EPECIPICATION- forming part of Letters Patent No. 340,413, dated April 20, 1886.

Application filed March 4,1886.

Serial No. 194,018. (No model.)

To all whom it may concern-.-

Be it known that I, PHILLIP BIRCH, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented certain new and useful Improve ments in Grooving and Seam-Setting-Down Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, suchas will enable others skilledin the artto which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, forming part of this specification.

My invention relates to grooving and seamsetting-down machines; and it consists in the improvements hereinafter set forth and explained.

My invention is illustrated in the accompanying drawings, in which Figure 1 is a perspective View of my improved grooving and seam-setting-down machine. Fig. 2 is a perspective view of a section of the improved stake or mandrel used in my improved ma chine. Fig. 3 is a side elevation of a hand groove and seam-setting-down machine embodying my improved stake or mandrel.

Like letters refer tolike parts in all the fig In the construction of my improved grooving and seam-settingdown machine, A A are the legs or upright portion of the frame. The upper part of the frame A is provided with a cross-piece, B, having ears or bearings C O, in which the hammer D is pivoted, as hereinafter described. The cross-piece B also projects beyond the upright frame A on one side at E, where it is secured to the frame-work F F, which serves to connect the uprights A A together. On the top of the upright frame A, and parallel to the cross-piece B, there is socured, by being preferably cast as a part of A, a tubular hearing or sleeve, G, this tubnlar hearing or sleeve G being securely attached to the frame-work F F, which, together with the uprights A A, form the frame-work of the machine.

The hammer D is mounted in the bearings O C on the cross-piece B, preferably by means ofa rod, H, passing through the ends (1 d of the frame of the hammer D, and also through the bearings O 0. Upon the rod H. is placed a spiral retracting-spring, I, adapted to raise the hammer, after a blow is struck, into position for the next stroke. 7

The hammer D is operated to produce a stroke by a treadle, J, which is mounted in hearings in the lower part of the upright frame A, and connected to the arms d (l of the hammer I) by connecting-rods K K, so that the operator can bring down the hammer D upon the stake or mandrel L, producing a sharp blow thereon. This stake or mandrel L is constructed of a round bar of metal, and maybe of any convenient diameter to suit the class of work upon which the machine is at the time employed, one end of the stake or mandrel L fitting into the bearing or sleeve G, where it is secured by means of a set-screw, g, and any number or sized mandrels may be used in the machine, the ends fitting into the bearing G being made of equal size. This stake or mandrel L is provided with one or more longitudinal grooves N. One ofthe edges, or, of these grooves N is fixed and stationary, while the other edge of the groove N is in the form of a movable guide, 0, which is set in a longitudinal recess in the stake or mandrel L upon springs 0, its upward movement being limited by the size of the slots 0, so that when it is up it, together with the fixed edge n, forms the groove N. W'hen, however, a sheet-metal seam is placed in the groove N, and the hammer D brought down upon the stake or mandrel L, the movable side or guide 0 on one side of the groove N is forced downward by the force of the blow, and at the same time the metal projecting over the fixed edge a of the groove N is crimped down so that the sheet is grooved throughout its en tire length on that side, and at the same time the blow of the hammer D sets the seam together and finishes it, the seam thus formed being entirely below the upper surface of the metal. For example, in a stove, conductor, or other pipe the outside is left smooth and even, the entire fold of the seam being on the inside of the pipe.

In one end of the face ofthe hammer D, I place a punch, Q, which, when the hammerD is struck down upon the stake or mandrel L, enters a hole, Q, in the face of the groove N, so that in grooving and setting down the seams in stove-pipes and other pipes which it is desired to rivet a hole may be punched through the folds forming the seam, if desired. However, this part of my device may be dispensed with, if desired, as rivets are not necessary or 5 used at all in many of the kinds of pipe which are adapted to be grooved and seamed in my machine. This stake or mandrel L may have grooves of different widths on opposite sides thereof, and both the mandrel L and face of the hammer D may be made of any convenient length to take on cylinders of all the lengths ordinarily made of sheet metal or tin, both grooving and setting down the seam, so as to completely finish it at one operation, which '5 consists of one or more blows of the hammer D, according to the thickness of the metal being so grooved and set down.

In Fig. 3 I have shown my improved stake or mandrel L in combination with an ordinary :0 hand grooving and seaming machine. The roller P in this machine in traveling along the groove N depresses the movable side or guide 0, producing a similar result to that produced by the hammer D. (Shown in Fig. 1.) Having thus described my improved grooving and sealn-setting-down machine, I do not claim, broadly, the combination of a hammer striking down upon a groove in a table or other fiat surface,which operates to groove the metal; 0 but I am not aware of any such construction adapted to both groove and set down the seam at one operation, as I do.

Therefore what I claim as new, and desire to secure by Letters Patent of the United 5 States, isp 1. The combination,in a grooving and scamsetting-down machine, of a stake or mandrel mounted in the frame of the machine and provided with one or more longitudinal grooves .o therein, one of the edges of which grooves is movable, witha hammer mounted in the frame of the machine adapted to strike downward upon said stake or mandrel, substantially as and for the purpose set forth. 5 2. In a grooving and seam settingdown machine, a stake or mandrel having one or more longitudinal grooves therein, one of the edges of which grooves is movable, snbstantially as and for the purpose set forth. I a 3. The combination,in a grooving and seamsetting-down machine, of standards connected together at one end thereof by a cross-frame,

a pivoted hammer provided with retractingsprings,and treadle mechanism for operating the same mounted in said frame, with asleeve on one of said frames adapted to receive and support the stake or mandrel upon which said hammer strikes, substantially as and for the purpose set forth.

4. The combination, in a grooving and seam- 6o settingdown machine, of a removable stake or mandrel having longitudinal grooves therein, with a tubular sleeve or bearing on the frame of said machine adapted to support said removable stake or mandrel under the face of the hammer of said machine, substantially as and for the purpose set forth.

5. The combinatiomin a grooving and seamsettingdown machine, of a pivoted hammer mounted in the frame of said machine, having a rivet-punch in the face thereof, with a removable stake or mandrel mountedin a sleeve or bearing on said frame, and having therein one or more longitudinal grooves, one of the sides of which grooves is movable, and having openings in the face of the groove for the entry of the punch in the face of the hammer, substantially as and for the purpose set forth.

6. The combination, in astake for grooving and seam-setting-down machines, of longitudi- 8o nal grooves N, having the fixed edge a, with the movable edge or guide 0, restingupon the springs o, and adapted tobe forced downward during the setting down of the seam, substantially as set forth. 5

7. The combiuation,in a grooving and seamsetting-down machine, of the upright frames A A, and eross'frame F, the hammer D, pro vided with the retracting-spring H, mounted in the top of the frame A, and the treadle J, 0 mounted in the lower part of the frame A, and connected with the arms d d of the hammer D by connecting-rods K K, with a tubular bearing or sleeve, G, on the top of the frame A, and the removable stake or mandrel L 5 supported thereby, all substantially as and-for the purpose set forth.

In testimony whereof I afiix my signature in presence of two witnesses.

PHILLIP BIRCH.

\Vitnesses:

M. STURGEON, JOHN S. RII.I. ING.. 

